Please provide the details on how: a. a Sunscreen or Sun Filter ingredient's SPF is measured? b. a Sunscreen product's water resistance is measured? c. a Sunscreen product's broad spectrum ability (resistance to both UVA and UVB) is measured?

Q: Give the significance of Chromic Acid test? 2. Give the significance of Lucas test? 3. Give the sign...

A: Chemical tests are so much useful to detect the presence anything that we want.  These tests are so ...

Q: A chemist must prepare 700. mL of 17.0 µM aqueous zinc oxalate (ZnC,0,) working solution. She'll do ...

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Q: Question 15 Heteroglycans consists of only one type of monomer and chitin is as example True False

A:

Q: Your task is to categorize and tabulate the 20 standard amino acids with the following columns:

A: Amino acid are the building block of protein which contain both acidic COOH and basic NH2 group 

Q: What is the reading of the caliper? mm 10 20 30 40 50 1 5. 8 A 7.14mm B 7.35 7.70mm D 7.80mm E None ...

A:

Q: A 0.001 m solution of a weak electrolyte ionizes into 4 ions freezes at -0.06C. What is the apparent...

A: Given: Molality of weak electrolyte = 0.001 m And the freezing point of the solution = -0.06 oC  

Q: 1.15(a) A gas at 250 K and 15 atm has a molar volume 12 per cent smaller than that calculated from t...

A:

Q: what are the four major categories organic molecules and give an example of each?

A: Organic compounds is mainly made up of carbon and hydrogen contains heteratoms like nitrogen, oxygen...

Q: Suppose you have an 8-hour ozone value of 0.088 ppm, and a PM2.5 value of 35.7 ug/m³. The AQI value ...

A: From the given table we can clearly see that 8hr O3 value of 0.088 ppm lies in the unhealthy region ...

Q: What volume of a 0.500 M HCI solution is needed to neutralize each of the following: (a) 20.0 mL of ...

A: We will first write balanced chemical equations for both and then find volume of HCl needed.

Q: If the reaction was run with 4.32 g of 2-naphthol and 4.45 g of 2-butoxynaphthalene was isolated, wh...

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Q: 1. Classify each of the following into ionic, molecular, covalent or metallic solid. a. Au b. NO2 C....

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Q: Q4. Indicate how many Pi electrons each of the following compounds and label each as aromatic, nonar...

A: We have find out the pi elections and aromatic, anti aromatic , non aromatic compounds

Q: Give the general formula of the following: 1. Alcohols 2. Phenols 3. Ethers What is the nomenclature...

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Q: Determine the limiting reactant: Ba(OH)2 (aq) + 2HCl (aq) --> 2H2O (l) + BaCl2 (aq) (balanced) 500...

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Q: Question 30 Match the pair of monosaccharides that exhibit the type of isomerism being described per...

A: The matching is as follows:  

Q: O ACIDS AND BASES Predicting acid or base strength from the conjugate relative pH of 0.1 M aqueous s...

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Q: Conversion Factors in Calculations Report Sheet - Lab 2 B. Significant Figures in Calculations B.1 P...

A: Significant figures can be defined as  the number of digits in a value that tell us about the accura...

Q: Which of the following half-reactions are reduction? (A NO, → NO B H,→H* © CI¯→CI, Mn→ Mn0, 2+

A:

Q: An aqueous solution was prepared by dissolving 4.93 g of KI in enough water to make 500.0 mL of solu...

A: Given: Mass of KI = 4.93 g. And volume of solution = 500.0 mL = 0.500 L                             ...

Q: Suppose you need to prepare 1.00 L of 0.100 M HCI(aq), and all you have on hand is 0.250 M HCI(aq)....

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Q: - Compare the properties of the following using , or = sign 1. boiling point 3.0 mC,H,,O, 2.0 m NaC...

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Q: Match the four structures with the four IR spectra (by putting a proper letter in the box to the rig...

A: IR spectrum mainly used for the identification of the functional group present in the molecule. The ...

Q: Question 3 Which of the following best describes the glycosidic bond in the disaccharide shown? CHOH...

A:

Q: A 0.800 M HCl was diluted to a final volume of 500. mL . If the new concentration is 0.20M . What wa...

A: Given that, a 0.800 M HCl was diluted to a final volume of 500 mL.  The concentration after dilution...

Q: A. Oligosaccharide component of antibiotic consisting of deoxypyranoses B. Oligosaccharide with 3 di...

A: The matching is as follows:  

Q: What is the value of K for this aqueous reaction at 298 K? A +B =C+ D AG° = 17.48 kJ/mol K =

A:

Q: Aspartame is the artificial sweetener sold as a Nutrasweet and Equal sweetener over the counter. Its...

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Q: a. Calculate the molar mass of P2O5. Molar mass = g/mol b. Calculate the molar mass of Ca3 (PO4)2 - ...

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Q: Enumerate the appropriate methods of extraction and purification of glycosides.

A: A question based on analytical separations that is to be accomplished.

Q: Complete the balanced chemical equation for the following reaction between a weak base and a strong ...

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both...

Q: WHICH FORM OF IRON WILL YIELD A HIGHER DENSITY : FCC OR BCC? IRON HAS AN ATOMIC RADIUS OF 0.124 NM

A:

Q: CHOH CHCH A CHOH CHOH 1 CHOH `CH 3 CH-OH CH OH B (CH 2 If this were a portion of a polysaccharide, w...

A: Given structure of the polysaccharides is :  Options are :

Q: Explain why yellow or yellow-red solutions have a peak absorbance of 540nm (in the green range on th...

A: In E M R there is mixture of colours.It is called ROY G BIV.So the color of the compound can be expl...

Q: Gold has compounds containing gold(I) ion or gold(III) ion. A compound of gold and chlorine was trea...

A: To find percent of chlorine, first find amount of chlorine present in AgCl and then use percent by m...

Q: e compounds shown is consistent with the given IR spectrum?

A: In this question we have to choose correct option of the compounds shown in consistent with the give...

Q: -5 Calculate the volume in liters of a 7.21 x 10 °uM zinc oxalate solution that contains 200. g of z...

A:

Q: Describe the solubility property of animal oil and plant oil in different solvents and solutions. Ca...

A: solubility of a compound in a particular solvent depends on the interaction between them. Higher the...

Q: an Licl solution has a fra fion of 9,4665 ppt concen what volume of solution will of 0.00057 q mass ...

A: Given: Mass of LiCl = 0.00057 g. And the concentration of LiCl = 9645 ppt.  

Q: Compute the % mass of a solution containing 5 g sodium chloride in 150 g solution? What is the molal...

A: Solution-

Q: Fill in the blanks of the following reaction scheme using any reasonable starting materials and reag...

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Q: он CH OH OH CHOH но- I ACNH O II OH CH3 HO HO III но

A: This is a reducing sugar as there is a present of free -OH group adjacent to the ring oxygen atom , ...

Q: Which is a D-sugar?

A: All naturally  occurring  sugars  are D sugars  They all have basic unit D glyceradehyde. In the str...

Q: Electron-withdrawing substituent in benzene ring activated position at: Select one: а. С-2 b. C-2 an...

A:

Q: How many moles of carbon dioxide (CO,) are in 22.3 g of the compound? moles of carbon dioxide: mol

A: We will calculate moles using mass and molar mass of CO2.

Q: What is the pH of a solution in which 15 mL of 0.10M NaOH js added to 25 mL of 0.10 M HC1? pH = %3D

A:

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 194.0 g sample ...

A: Mass of sample = 194 gram Initial temperature = - 8.3℃ Final Temperature , T2 = 4.5 ℃ Change in temp...

Q: HO CH,OH CH;ČNH Protein II CH,OH HO CH,OH OH IV Is the antigenic determinant reducing or non-reducin...

A: The reducing  sugars are sugars that acts as reducing  agent and reduces other species. The sugars  ...

Q: A cylinder contains 29.0 L of oxygen gas at a pressure of 1.7 atm and a temperature of 280 K . How ...

A: Given Volume(V) =29L Given pressure(P)=1.7atm Temperature(T)=280K Gas constant(R)=0.0821Lk-1atm mol-...

Q: The following acid-base reaction occurs spontaneously in the gas phase: NH:(g) + HCI(g) = NH:CI(s) D...

A: